height=1.75
weight=80.5
BMI=weight/height**2
print(BMI)
if BMI>32:
    print('严重肥胖')
elif BMI>28:
    print('肥胖')
elif BMI>25:
    print('过重')
elif BMI>18.5:
    print('正常')
else:
 print('过轻')